Linksys WRTSL54GS.....20meg line?

Hi can anyone tell me will this be ok with a 20meg line? My local cable company (Virgin Media)have just upgraded me from 10meg to 20meg, but so far I see no difference just wondering would it be my router?

I know the cable modem is ok as my friend who lives local has the same modem and he just got his 20meg upgrade. I have switched the cable modem and router off then back on, but still the same :frown: Just thought I would ask here before ringing them up.